4 results about "Shock sensitivity" patented technology

The invention discloses an inner salt type high-energy density insensitive explosive and a preparation method thereof, 9-amino-2, 6-dinitro-bis [1, 2, 4] triazolo [1, 3, 5] triazine, namely ZDTT, is prepared, and the ZDTT has the performance advantages of high energy density and insensitivity and also has the advantage of simple synthesis process; zDTT has a unique inner salt type condensed ring structure and is insoluble in water and conventional organic solvents. The ZDTT actual measurement density is 1.881 g.cm <-3 >, the detonation velocity is 8757 m.s <-1 >, the detonation pressure is 31.7 GPa, the initial thermal decomposition temperature is 330 DEG C, the impact sensitivity is larger than 40 J, the friction sensitivity is larger than 360 N, and the high-energy-density insensitive explosive has huge application potential in the field of high-energy-density insensitive explosives.

The invention belongs to the technical field of safety of energetic materials, and particularly discloses a method for determining a thermal-mechanical coupling ignition threshold value of an energetic material, which comprises the following steps: firstly, heating an energetic material sample to a preset specific temperature, simulating a possible thermal environment of the energetic material sample, and then immediately carrying out an impact sensitivity test at the temperature to determine the thermal-mechanical coupling ignition threshold value of the energetic material. And thus, a safety threshold closer to an actual risk scene is obtained. According to the determination method, the safety threshold closer to the actual risk scene can be obtained, and the method has the characteristics of comprehensive evaluation and accurate and reliable test result.

Explosives using thermally expandable microspheres (TEMs) in a solid matrix are disclosed that facilitate tunable changes in local density, porosity, and ultimately, shock sensitivity. Solid high explosive systems with “on demand” shock sensitivity may be created. A relatively small fraction (e.g., 1% or less) of TEMs may incorporated during the manufacturing process of the solid matrix explosive (e.g., polymer-bonded explosives (PBX), trinitrotoluene (TNT), etc.). The fraction of TEMs used to achieve the desired explosive properties will depend on the base explosive material to achieve the desired initiation sensitivity.

The application discloses a kind of gel-like energetic material continuous pushing device and its related system, device and method, the gel-like energetic material can be stably filled in water gap for a long time without shell and connect gap positive and negative electrode.Other ingredients do not contain explosive in dangerous goods item, common formula is the mixture containing nitromethane, aluminum powder, metal oxide, friction sensitivity and impact sensitivity are zero after test of initiating explosive, safety is extremely high.And formula component is not soluble or very difficult to dissolve in water, not fail, not decompose under long-time soaking in water, still can be normally initiated under the action of pulse current.Gel-like energetic material is filled in water gap and can generate fixed amplitude, impulse and energy shock wave under the driving of specific parameter pulse source, with excellent repeatability.Compared with original parameter, water gap discharge greatly improves the amplitude, impulse and energy of shock wave, with great engineering application prospect.